S
M
T
W
T
F
S
26
88°
76°
27
89°
75°
28
89°
76°
29
90°
76°
30
90°
77°
31
88°
76°
1
88°
76°
2
90°
75°
3
87°
76°
4
89°
76°
5
89°
75°
6
87°
77°
7
90°
73°
8
88°
75°
9
90°
75°
10
91°
76°
11
92°
75°
12
91°
74°
13
92°
75°
14
92°
75°
15
91°
74°
16
92°
75°
17
91°
75°
18
91°
74°
19
90°
74°
20
90°
75°
21
87°
75°
22
87°
74°
23
88°
73°
24
88°
75°
25
91°
75°
26
91°
74°
27
90°
75°
28
91°
74°
29
89°
73°
30
88°
74°
31
87°
73°
1
88°
74°
2
87°
70°
3
86°
70°
4
86°
71°
5
87°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Slidell
Slidell's August 2026 forecast shows daily high temperatures ranging from 86° to 92°, with overnight lows between 70° and 77°. The average high for August is 89° with an average low of 74°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Slidell. See also: September | October | November.
